Stewart Brooks, DWP senior fraud investigator, said:
"This was a complex case and our fraud investigators' perseverance ensured that this abuse of the benefits system was stopped.
"The Judge was clear in his praise for the DWP investigators and the staff who spotted the fraud that led to the investigation, calling their work impeccable.
"Our teams follow up calls to the National Benefit Fraud Hotline, check back through old cases for suspect activity and work closely with councils to make sure these criminals are brought to justice."
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